Build (method = -2) #dp: 649 Step-3' Graph: 47 vertices and 262 arcs (0.00s) Step-4' Graph: 27 vertices and 222 arcs (0.00s) #V4/#V3 = 0.57 #A4/#A3 = 0.85 Ready! (0.00s) Optimize a model with 66 rows, 223 columns and 621 nonzeros Presolve removed 23 rows and 26 columns Presolve time: 0.00s Presolved: 43 rows, 197 columns, 549 nonzeros Variable types: 0 continuous, 197 integer (17 binary) Found heuristic solution: objective 395.0000000 Found heuristic solution: objective 370.0000000 Optimize a model with 43 rows, 197 columns and 549 nonzeros Presolved: 43 rows, 197 columns, 549 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.480e+02 Factor NZ : 6.380e+02 Factor Ops : 1.116e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.96429416e+03 -3.93554109e+03 1.16e+04 2.22e-16 8.88e+01 0s 1 8.82580060e+02 -1.48308166e+03 1.43e+03 1.78e-15 1.35e+01 0s 2 3.65391022e+02 -2.29534530e+02 2.98e+01 8.33e-15 1.54e+00 0s 3 2.82748151e+02 1.03530680e+02 2.67e-01 3.22e-15 4.34e-01 0s 4 2.48825329e+02 2.10324983e+02 3.08e-02 1.67e-15 9.32e-02 0s 5 2.41686687e+02 2.37326032e+02 4.44e-03 1.89e-15 1.06e-02 0s 6 2.40003989e+02 2.39987980e+02 1.15e-05 2.41e-15 3.88e-05 0s 7 2.40000000e+02 2.40000000e+02 1.27e-11 2.26e-15 4.28e-11 0s Barrier solved model in 7 iterations and 0.00 seconds Optimal objective 2.40000000e+02 Root relaxation: objective 2.400000e+02, 110 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 240.0000000 240.00000 0.0% - 0s Explored 0 nodes (110 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.400000000000e+02, best bound 2.400000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 240 Solution: 2 x [7, 23] 2 x [28, 39] 14 x [36] 2 x [32, 34] 1 x [28, 34] 1 x [23, 34] 11 x [2, 9] 11 x [22, 32] 40 x [14] 18 x [30] 8 x [6] 5 x [6, 16] 4 x [6, 15] 2 x [2, 6] 6 x [1, 27] 6 x [8, 25] 5 x [27, 33] 15 x [31, 38] 4 x [8, 21] 1 x [21, 27] 14 x [5, 18] 4 x [3, 18] 2 x [18, 38] 8 x [8, 10] 5 x [11, 27] 1 x [11, 26] 2 x [4, 17] 17 x [13, 37] 1 x [26, 35] 6 x [19, 24] 3 x [8, 20] 1 x [17, 19] 5 x [12, 13] 1 x [8, 26] 12 x [26, 29]